package com.yxinsur.imc.common.utils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

import org.apache.commons.lang3.time.DateFormatUtils;

/**
 * 时间工具类
 *
 * @author imc
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils
{
    public static String YYYY = "yyyy";

    public static String YYYY_MM = "yyyy-MM";

    public static String YYYY_MM_DD = "yyyy-MM-dd";

    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

    private static String[] parsePatterns = {
            "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
            "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static Date getNowDate()
    {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    public static String getDate()
    {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime()
    {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow()
    {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format)
    {
        return parseDateToStr(format, new Date());
    }

    public static final String dateTime(final Date date)
    {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static final String parseDateToStr(final String format, final Date date)
    {
        return new SimpleDateFormat(format).format(date);
    }
    /**
     * 获取两个时间相差月份
     * @param startDate 开始时间
     * @param endDate	结束时间
     * @return
     */
    public static int getDifMonth(Date startDate, Date endDate){
        Calendar start = Calendar.getInstance();
        Calendar end = Calendar.getInstance();
        start.setTime(startDate);
        end.setTime(endDate);
        int result = end.get(Calendar.MONTH) - start.get(Calendar.MONTH);
        int month = (end.get(Calendar.YEAR) - start.get(Calendar.YEAR)) * 12;
        return Math.abs(month + result);
    }
    public static final Date dateTime(final String format, final String ts)
    {
        try
        {
            return new SimpleDateFormat(format).parse(ts);
        }
        catch (ParseException e)
        {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static final String datePath()
    {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static final String dateTime()
    {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str)
    {
        if (str == null)
        {
            return null;
        }
        try
        {
            return parseDate(str.toString(), parsePatterns);
        }
        catch (ParseException e)
        {
            return null;
        }
    }

    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate()
    {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate)
    {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }

    public static String getPreCalendar(Date newDate,Integer n){
        //获取当前日历日期
        GregorianCalendar calendar = new GregorianCalendar();
        calendar.setTime(newDate);
        // 增加 n 个月
        calendar.add(Calendar.MONTH,n);
        //将往前推的日期转为字符串
        return new SimpleDateFormat("yyyy-MM-dd").format(calendar.getTime());
    }

    /**

     * 获取前/后半年的结束时间

     * @return

     */

    public static Date getHalfYearStartTime(Date newDate){
        Calendar c = Calendar.getInstance();
        c.setTime(newDate);

        int currentMonth = c.get(Calendar.MONTH) + 1;

        Date now = null;

        try {
            if (currentMonth >= 1 && currentMonth <= 6){
                c.set(Calendar.MONTH, 0);

            }else if (currentMonth >= 7 && currentMonth <= 12){
                c.set(Calendar.MONTH, 6);

            }

            c.set(Calendar.DATE, 1);

            now = parseDate(parseDateToStr(YYYY_MM_DD,c.getTime()));

        } catch (Exception e) {
            e.printStackTrace();

        }

        return now;

    }

    /**

     * 获取前/后半年的结束时间

     * @return

     */

    public static Date getHalfYearEndTime(Date newDate){
        Calendar c = Calendar.getInstance();
        c.setTime(newDate);

        int currentMonth = c.get(Calendar.MONTH) + 1;

        Date now = null;

        try {
            if (currentMonth >= 1 && currentMonth <= 6){
                c.set(Calendar.MONTH, 5);

                c.set(Calendar.DATE, 30);

            }else if (currentMonth >= 7 && currentMonth <= 12){
                c.set(Calendar.MONTH, 11);

                c.set(Calendar.DATE, 31);

            }

            now = parseDate(parseDateToStr(YYYY_MM_DD,c.getTime()));

        } catch (Exception e) {
            e.printStackTrace();

        }

        return now;

    }


    /**

     * 当前季度的开始时间，即2012-01-1 00:00:00

     *

     * @return

     */

    public static Date getCurrentQuarterStartTime(Date newDate) {
        Calendar c = Calendar.getInstance();
        c.setTime(newDate);

        int currentMonth = c.get(Calendar.MONTH) + 1;

        Date now = null;

        try {
            if (currentMonth >= 1 && currentMonth <= 3)

                c.set(Calendar.MONTH, 0);

            else if (currentMonth >= 4 && currentMonth <= 6)

                c.set(Calendar.MONTH, 3);

            else if (currentMonth >= 7 && currentMonth <= 9)

                c.set(Calendar.MONTH, 4);

            else if (currentMonth >= 10 && currentMonth <= 12)

                c.set(Calendar.MONTH, 9);

            c.set(Calendar.DATE, 1);

            now = parseDate(parseDateToStr(YYYY_MM_DD,c.getTime()));

        } catch (Exception e) {
            e.printStackTrace();

        }

        return now;

    }

    /**

     * 当前季度的结束时间，即2012-03-31 23:59:59

     *

     * @return

     */

    public static Date getCurrentQuarterEndTime(Date newDate) {
        Calendar c = Calendar.getInstance();
        c.setTime(newDate);

        int currentMonth = c.get(Calendar.MONTH) + 1;

        Date now = null;

        try {
            if (currentMonth >= 1 && currentMonth <= 3) {
                c.set(Calendar.MONTH, 2);

                c.set(Calendar.DATE, 31);

            } else if (currentMonth >= 4 && currentMonth <= 6) {
                c.set(Calendar.MONTH, 5);

                c.set(Calendar.DATE, 30);

            } else if (currentMonth >= 7 && currentMonth <= 9) {
                c.set(Calendar.MONTH, 8);

                c.set(Calendar.DATE, 30);

            } else if (currentMonth >= 10 && currentMonth <= 12) {
                c.set(Calendar.MONTH, 11);

                c.set(Calendar.DATE, 31);

            }

            now = parseDate(parseDateToStr(YYYY_MM_DD,c.getTime()));

        } catch (Exception e) {
            e.printStackTrace();

        }

        return now;

    }

}
